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AM55-0004RTR Datasheet(PDF) 6 Page - M/A-COM Technology Solutions, Inc.

Part No. AM55-0004RTR
Description  250 mW Linear Power Amplifier and T/R Switch 1.8-2.0 GHz
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Manufacturer  MA-COM [M/A-COM Technology Solutions, Inc.]
Direct Link  http://www.macomtech.com
Logo MA-COM - M/A-COM Technology Solutions, Inc.

AM55-0004RTR Datasheet(HTML) 6 Page - M/A-COM Technology Solutions, Inc.

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• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.4155721
• China Tel: +86.21.2407.1588
Visit www.macomtech.com for additional data sheets and product information.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
6
250 mW Linear Power Amplifier and T/R Switch
1.8—2.0 GHz
Rev. V2
AM55-0004
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY:
Data Sheets contain information regarding a product M/A-COM Technology
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
Commitment to produce in volume is not guaranteed.
Recommended PCB Configuration
The PCB dielectric between RF traces and RF
ground layers should be chosen to reduce RF
discontinuities between 50-
⏐ lines and package
pins. M/A-COM recommends an FR-4 dielectric
thickness of 0.008 in. (0.2 mm), yielding a 50-
⏐ line
width of 0.015 in. (0.38 mm). The recommended
metalization thickness is 1 oz. copper. Shaded
traces are vias to DC routing layer and traces on
DC routing layer.
Biasing Procedure
The AM55-0004 requires that VGG bias be applied
prior to any VDD bias. Permanent damage may
occur if this procedure is not followed. All FETs in
the PA will draw excessive current and damage
internal circuitry.
External Circuitry
External Circuitry Parts List
All off-chip components are low-cost surface mount components
obtainable from multiple sources. (0.020 in. x 0.040 in. or 0.030
in. x 0.050 in.)
Label
Value
Purpose
C1 - C5
1000 pF
Low Frequency bypass
C6 - C8
68 pF
RF bypass
C9
1.5 pF
Output power tuning
C10
15 pF
Reduces low frequency gain
R1
2.7 k Ω
Voltage divider to VG2
R2
1.5 k Ω
Voltage divider to VG2
R3
150 Ω
Reduces low frequency gain
Tline
0.250 in. long
Power match


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